[LyX/master] Clarify message about an empty file

commit 6343d9941a63dbf788516eb325e589f70f06c6f1 Author: Scott Kostyshak skost...@lyx.org Date: Sat Feb 21 23:46:42 2015 -0500 Clarify message about an empty file When empty output is generated, no PDF is produced. The previous message made it seem like an empty PDF was

[LyX/master] Clarify message about an empty file

commit 6343d9941a63dbf788516eb325e589f70f06c6f1 Author: Scott Kostyshak Date: Sat Feb 21 23:46:42 2015 -0500 Clarify message about an empty file When empty output is generated, no PDF is produced. The previous message made it seem like an empty PDF was